Edge-setter.



E. N. CHANDLER.

EDGE SETTER.

APPLICATION FILED AuG.2I. 1915.

PaIenIed May 8,1917. I

uw @www @y www EDWIN N. CHANDLER, OF BRAINTREE, MASSACHUSETTS.

EDGE-SETTER.

Specification of Letters-Patent.

Patented May S, 1917.

Application filed August 21, 1915. Serial No. 46,675.

like letters on the drawings representing liker parts.

My present invention is an improved edge setter and electric heating means therefor'. In edge setters for use in burnishing or finishing the sole edges of boots and shoes it is necessary to supply heat thereto and as the edge setting tools themselves are either rotating or vibrating at a high velocity it has been peculiarly difficult to properly and uniformly heat them. In my prior. Patents Nos. 984,538 and 977,510, I have shown different methods of supplying electrical heat to the vibrating tools of an edge setter, but these prior devices have been objectionable in several ways, for example, the breaking of the wires supplying current to the vibrating member, owing to the-high speed and. constant vibration, e. several thousand vibratory movements per minute), and my present device is intended to obviate this difficulty. A further difficulty in endeavoring to supply electrical heat to a vibrating edge setter has been that the heating member was apt to be in the way of the work. In setting the sole edges of boots and shoes it is especially important to allow of a wide range of manipulation of the shoe, particularly around the shank portions, and it is, therefore, of great importance to have the heatsupplying part entirely out of the way of the operator and of the work. My present invention is directed to overcome the last named ditliculty as well as to eliminate the prior objections of breaking wires, etc. Other important features of the invention and novel details and combinations of parts will be hereinafter more fully pointed out and claimed.

Referring to the drawings illustrating a preferred embodiment of my invention, Figure 1 is a front view of the top portion of an edge setting machine shown in fragmentary form only, together with the edge Setters thereon; Fig. 2 is a side view; Fig. 3 is an enlarged view of the removable electric plug heater, and Fig. 4 is an enlarged detail of the connection for the electric current supply means from the iiXed part of the machine to) the vibratory part.

In the accompanying drawings I have illustrated my invention in an edge setter of the well-known Ross-Moyer type, although it is equally applicable to any vibratory edge setter. A portion of the standard or support of an edge setting machine is indicated at 1 on which the head 2 is fixed, said head carrying bearings for the rotatable shaft 3 operated by a belt 4 around a pulley thereon in the usual manner. An eccentric stud 6 is carried on the outer end of said shaft to which a link 7 is attached at right angles thereto, being pivotally connected at 3 to an oscillating member 9 pivoted at 10 and carrying the edge setting tools 11 and 12 in a head 13 on its lowermost portion. Rotation of the shaft 3 oscillates the link 7 and lever 9, giving the edge setting tools 11 and 12 a high reciprocating speed. The head 13 is usually maintained in yielding position by attachment to a. plunger 14 on which a spring 15 bears within the housing 16 as clearly shown in Figs. 1 and 2.

The prior efforts to ailiX an electric heater on the vibrating head 13, with wires directly attached thereto were unsatisfactory because the heater had to be in close proximity to the setting tools 11 and 12 inorder to keep them at a proper degree of heat, and therefore 'the heater received substantially the same extent of vibratory movement as the tools. Connecting the current supply wires directly to a heater in such position resulted in frequent breaking of the wires, as well as the objection of said wires being in the way of the operator. setter I have devised a novel means of conveying the electric current to the heater by means of a sliding contact arranged in a novel position and out of the way of the operator. 0n the head 2 of the machine I provide a fixed bracket 17 carrying in its lowermost portion an insulating plug- 18 which is bored to receive two fixed binding posts 19 and 2O to which the supply wires 21 and 22 respectively are attached. Each binding post is recessed as shown in Fig. i and receives a brass rod 23, which is normally held forwardly by the coiled spring 24. The casing 25 is fitted on the lower portion 9 of the vibrating part by a bracket 26 united to the member 9 by bolts (not shown) or other suitable means. This bracket is preferably split at one end, one portion being held. to the In my present edge under pressure.

other by the bolt 27 which may be loosened to facilitate removal of the plug heater 28 held therein. At the forward end of the 4casing 25 are arranged the conductors 29 and 30, from which conductors the supply wires 31 and 32 respectively are led to the heater 23. Each of these conductors is preferably held by a member 33, which may be in the form of a ange on the casing 25, being perforated to receive the conductors. As illustrated in Fig. 4, the conductor 30,.for example, is formed as a headed bolt, having its head portion 34 arranged in position to contact with the end of the adjacent rod 23, suitable insulating material comprising preferably the mica washers 35 and 36 and the fiber bearing 37 or the like through which the bolt 30 extends being provided to hold the same. A washer of brass, or similar conducting material 38 and a retaining mica washer 39, which a nut 40 holds in position on the inner end of the conductor 30, serve to hold the outer end 41 of the heater wire 31 into binding relation with the conductor 30. `Vibration of the edge setters and the casing 25 and plug heater 28 contained therein similarly vibrate the conductors 29 and 30,

the enlarged heads of which are in constant sliding contact with the abutting ends of the brass rods 23 adjacent to each, which rods are held yieldingly outward by their springs. This construction enables me to provide a constant and good electrical contact from the fixed supply wires 21 and 22 to the removable plug heater 28, without danger of breaking wires, without having an objectionable coil or undue mass of mechanism in the way of the operator, and furthermore facilitates disconnection or reconnection when a heater 2S is removed and a new one put in position. I prefer to supply a set screw 42 in thel casing 25 which will bear against the heater 28. and hold the same in position during the vibration of the machine, thus relieving the wires 31 and 32 from strain. The entire apparatus can be applied to any existing vibrating edge setter of the Ross-Moyer, Union or similar type and holds the electrical heating element directly down upon and over the socket piece in which the edge setting tools are positioned, as closely as a heater could be utilized and thus conserving the amount of electrical energy used. By having the conductors 23 firmly abut against the heads 34 of the corresponding conductors 29 and 30 by means of the spring tension, I secure the benet of electrical transmission It will also be understood that the heads 34 are of suflicient area to allow for this abutting contact during the entire range or scope of vibratory movement imparted to the carrier on which both edge Setters and heater are mounted. Such enlarged head 34 could, of course, be on the conductors23, if desired.

My invention is further described and defined in the form of claims as fellows:

1. A machine of the kind described, having a rapidly moving tool carrier, a casing on said carrier adapted to receive an electrical heater, conductors on said movable carrier, corresponding electrical conductors adjacent thereto on a fixed part of the machine, and means providing a sliding contact between the movable'conductors and said fixed conductors.

2. A machine of the kind described, having a rapidly moving tool carrier, a casing on said carrier adapted to receive an electrical heater, conductors on said movable carrier, and corresponding electrical conductors adjacent thereto on a fixed part of the machine, each having an end in sliding contact with an end of the corresponding conductor on the carrier, in combination with means for yieldingly maintaining said ends in Contact.

3. An electrically heated edge setter machine having a moving carrier for the edge setting tools, an electrical heater on said carrier, conductors for said electrical heater and coperating conductors on a stationary part of the machine, comprising yieldingly actuated members adapted to abut against the corresponding conductors on the moving carriers, one of each of the abutting conductors having a surface sufficient to permit relative movement of the other abutting conductor while maintaining contact therewith.

4. An electrically heated edge setting machine, having a vibrating carrier for the setters, a casing on said carrier adapted to receive a removable plug heater, a flange on said casing carrying electrical conductors for said heater, insulation between said flange and said conductors, corresponding electrical conductors on a stationary part of the machine adjacent said first mentioned conductors, and yieldingly actuated members on each of these stationary conductors constructed and arranged to maintain a yielding Contact with the moving conductors, whereby a supply of current for said electrical heater is provided from the stationary part of the machine.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWIN N. CHANDLER.

Witnesses:

. JAMES R. I-IODDER, HAROLD J. CLARK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

